405489532032 has 128 divisors (see below), whose sum is σ = 1288815696000. Its totient is φ = 124765996032.

The previous prime is 405489532027. The next prime is 405489532033. The reversal of 405489532032 is 230235984504.

405489532032 is a `hidden beast` number, since 4 + 0 + 5 + 4 + 89 + 532 + 0 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (405489532033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4467732 + ... + 4557587.

It is an arithmetic number, because the mean of its divisors is an integer number (10068872625).

Almost surely, 2^405489532032 is an apocalyptic number.

It is an amenable number.

405489532032 is an abundant number, since it is smaller than the sum of its proper divisors (883326163968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405489532032 is a wasteful number, since it uses less digits than its factorization.

405489532032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9025355 (or 9025337 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 405489532032 in words is "four hundred five billion, four hundred eighty-nine million, five hundred thirty-two thousand, thirty-two".